Window-screen.



v G. DLHARTLBTT & W.,A. WHEELER.

WINDOW SCREEN. AI PLIGA ION FILED MAR. 33, 1911.

Patented Aug. 5, 1913.

UNITED s'rATns PATEN OFFICE. I

GEORGE D. BARTLETT AND WILLIAM A. WHEELER, OF NEW CANAAN,-CONNECTICUT,

ess'xenons'ny'nmnc'r AND iansivn .asslenlvranrs, or ONE-HALF TO SAID.GEORGE n. nenrrnnrr uncritical.

AND ONE-HALF T0. CHARLES E. POWELL, STAMFORD, CON- wrnnow-son snn.

Patented A ug.'5, 1913.

Application and March 23, 19 11. 7 Serial No. 516,401. c

To all whom it may concern Be it known that we, GEORGE D. Ham'- Lm'r andWrLLIAM'A. VHEELER, citizens'of' the United States, residing at NewCanaan, in the county of Fairfield and State of Connecticut, haveinvented certain new and useful Improvements in WVindow-Screens, ofwhich the following is a specification.

Our said invention consists in various improvements in the details ofconstruction of screens for windows, of that type known as rollerscreens, wherein the screen may be rolled up, or extended, toaccommodate any extent of window (opening, and it has for its object toprovide such a screen structure the'dperation of which will not only beefiicient but practically noiseless and freefrom rattle, all as will behereinafter more fully described and claimed. 1

which are made a part hereof and on which similar reference charactersindicate similar the lower sash partly opened and the opening coveredwith a screen mounted on supports of our improved construction, Fig. 2 ahorizontal section on the dotted line 22 in Fig. 1, Fig. 3 a verticalsection on the dotted line 33 in Fig. 1, Fig. 4 a detail view of therack and pinion separately, showing the rack in section and the pinionin elevation, and Fig. 5 a detail view illustrating a modification.

In said drawings the portions marked A represent the roller upon whichthe screen is mounted, B the screen and C a metal guard, or casing,surrounding the roller.

It will be understood, of course, that the window structure,includingthe frame, sash and other parts, may be of any form, that shownbeing used merely to illustrate the use of the invention.

' The roller 'A is preferably a metal tube of appropriate size and ametal shaft 41 extends from end to end through the same and is connectedthereto by a coiled spring will be noiseless.

the other end to the window-sill by means of a n-retal strip or shoe '5.

The guard, or casing. C, is preferably of sheet metal and of a semicylindrical form adapted to surround the roller A and inclose the screen1 thereon. Its ends contain bearings for the ends of shaft a.

F Metal housings 10 are secured to thesides of the window-frames, saidhousings being of sheet metal pressed or bent to the-form bestillustrated in Fig. 2, consisting of a base adapted to rest against theside of the casing, a back side adapted to extend at right angles with abase and parallel with the plane of the window, a frontside extendingoutwardly for a distance parallel with the back side and then turnedinwardly for a distance to form a flange opposite tov and parallel withthe base of said housing. Referring to the accompanying drawings Anon-metallicrail 11is mounted in the ries of perforations or notchesadapted to receive the teeth of 't-hepinions and serve.

as rack-bars. The shaft 0; extends beyond the ends of roller A and haspinions 13 rigidly-secured thereon which are adapted to mesh with thenotches in said bars 12. Said pinions 13 and bars 12. are bothpreferably of fiber, or other non-metallic substance of a similarcharacter, whereby the operation but we regard itas essential that atleast one of said parts he made of non-metallic substance, as one of theleading purposes of our invention is to provide a structure of thecharacter named, the operation of which will be practically noiseless.

. A rod 14 extends longitudinally through a tubular formation on theupper edge of easing vC and a rod 15 through a similar formation on thelower edge'of said casing. The outer ends of said rods extend beyond theends of said casing and ar'eprovid'ed with rollers 16 of rubber, orsimilar nonresonant material. Said rollers fit snugly in theway formedbetween the adjacent faces of the bars 11 and 12 in the housing 10. Itwill be noted by an examination of Fig. 2 that bar 12 is of a width toextend beyond It may be found that one 7 -or the other of said parts maybe of metal,

tioal position. The teeth the line of the inturned outcrsidc of honw ingll) and that the notches forming the rack-bar are beyond said point sothat the pinions 13 may engage with said notches and clear said housing.The rods 14 and 15 with the rollers extend to within the housing andbetween the bars 11 and 12, as shown.

in Fig. 5 We have shown the outer ends of rods corresponding to the rods14 and 1:") turned at right angles, with a roller 17 thereon adapted tooperatebetween adjacent faces of a liar set again.,;t the base ofhousing 10 and another set agai the inner face of the inturned flange.This is a nioditication of the form shown in Fig. 2 and one of theobvious changes that inay he made in the structure without departingfrom our invention.

In use the normalposition of the casing C is at the lower end of theruns in housings .10 or practically restingupcn the window sill where,the screen will be i-ton'ipletely inclosed by said casing. After thewindow is raised casing C is also lifted until theroller A is oppositeend-lower rail 20 of the sash, the rollers 16 onthe ends of rods M and15 serving to guide and keep the casing in verof the pinions l3 engagingwith the notches in bars 12 serve to rotate said pinions and throughthem the shaft (1 which serves to wind the spring a and exert. a tensionupon the screen B, keeping it taut and straight.

Having thus fully described our said invention, what. We claim as neuand desire to secure by Letters Patent, is:

1. A window screen comprising a roller, a screen mounted on said rollerone edge of said screen attached to one side of the Window opening,pinions on the axis of said roller, raclcbars on each side of the Windowopening with which said .pinions engage, a guard rail adjacent to each;of said rackbars, a. shield or casing mounted to cover the roller, rodsextendingthrough the edges of said casing to between the rack-bars andguard rails, and rollers mounted on the ends of said rods and adapted toroll in the space. between said guard rails and said rack-oars,substantially as set forth.

2. A. window screen comprising a casing, a roller journaled Within saidcasing, ways in the adjacent sides of the window frame, rollers carriedby said casing-and adapted to run in said ways, wheels mounted on the,

axle ofisaid roller and adapted to engage with rack bars on the windowframe for rotating said axle, a screen attached at one end of saidroller and at the other end to one side of thewindow opening,substantially as set forth.

3. A window screen comprising a roller, means for supporting said rollerto he 'nioied vertically inihc window frame, an. axle running throughsaid roller and carrying wheels on its outer ends adapted to en withracic cars on said window frame and operate said axle, said bars,rollers can ried on the outer ends of the structure adapted to engage insaid Ways for guiding and holding said roller, and a screen attached atone end to said roller and at the other end to one side of the Windowopening, substantiallyv as setforth.

4:. A 'WiXKiOW screen comprising a casing, a roller journaled in saidcasing, vertical Ways at the sides of thewindow opening, rack-hareforming part. of said Ways, pinng said iPiClZ-lMUTS, one of saidengaging parts being nonn1ctallic, guide rollers on said casing,engaging said ways, and a screen attached at one edge to said roller andat the other edge to one side of the win doW opening, substantially asset forth.

5. A window screen comprising a casing, guide rollers on theoppositesides and ends of said casing, ways on each side of the window openingformed to receive said rollers, rack-bars alongside said Ways, a tubularroller in said casing, ashaft in said roller journaled in said casing,aspring connected at one end to said shaft and at its other end to saidroller, pinions on the ends of said shaft engaging said rack-bars, theguide rollers engaging and sliding in said ways on opposite sides ofsaid pinions, and a screen attached at one end to said roller and at theother end to one side of the Window opening, substantially as set forth.

6. A'WlIldOW screen comprising a casing carrying ROIl lTlBilllllC guiderollers on its corners, ways on the sides of the window opening in whichsaid rollers-are mounted to run, a roller in said casing, pinions on theshaft of said roller of non-metallic material engaging ways alongsidethe window opening, and a screen mounted on said roller and connected atone edge to one side of the window opening, substantially asv set forth.

In witness whereof, We have hereunto set our hands and seals atWashington, District of Columbia this 15th day of March, A. D. nineteenhundred and eleven.

onoaon D: BARTLETT. [us] 'WILLIAM A. WHEELER. 1. s]

Witnesses:

1 J. LL'YoAKLEY,

E. W. Bmnrono.

ions on the ends of the roller shaft engag-

